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8 Maintenance and Inspection
8-4
FVR-C11S-EN
8
Table 8-2-1
Periodic inspection list
Check part
Check item
How to inspect
Evaluation criteria
Control circuit
Control
PC board
and
connector
1. Loose screws or connec-
tors?
2. Unpleasant smell or
discoloration?
3. Cracks, damage, deforma-
tion, or excessive rust?
4. Electrolyte leakage or a
deformed mark on the
capacitor?
1. Tighten more.
2. Olfactory and
visual inspection
3., 4. Visual
inspection
1., 2., 3., 4.
Not abnormal.
Cooling system
Cooling
fan
(1.5 kW
minimum)
1. Abnormal sound or
vibration?
2. Loose of bolts?
3. Discoloration
by overheating?
1. Aural and visual
inspection. Turn
with hand. (Make
sure power is off)
2. Tighten more
3. Visual inspection
1. The fan must rotate
smoothly.
2., 3. Not abnormal
Ventila-
tion way
Clogging-up or foreign sub-
stance on heat sink or intake/
exhaust ports?
Visual inspection
Not abnormal
Note:
Use a capacitance measuring instru-
ment available on the market which is
easy to use.
Remark:
If the equipment is stained, wipe it with
a cleaning cloth, which is chemically
neutral.
Vacuum-clean the dust.